Isa Brown vs Amberlink: Understanding the Genetics behind them.

[nicalandia]

did you managed to get your Isa White .love to see some photos if possible .
great information about the different result of the crosses and how the silver proven to be more productive .

chooks man

Yes, they are basically white leghorns

 

[nicalandia]

 

[Chooks man]

View attachment 2130315

so they are white with red leakage .
what your plan ? I see they are penned with they rooster .
what will be a result of this breeding pen ?

chooks man

 

[nicalandia]

so they are white with red leakage .
what your plan ? I see they are penned with they rooster .
what will be a result of this breeding pen ?

chooks man

To Cross them together to get tinted egg layers. Ser How Hardy they are

 

[Chooks man]

To Cross them together to get tinted egg layers. Ser How Hardy they are

they progeny will be F2 than .expecting a lot phenotype expression ?
you will be selecting the tinted eggs layers?

chooks man

 

[nicalandia]

they progeny will be F2 than .expecting a lot phenotype expression ?
you will be selecting the tinted eggs layers?

chooks man

The Rooster is ISA Brown the hens are ISA Whites or Hyline W-36 White Leghorns so Technically they Will be F1 that Will Lay tinted eggs, I Also have ISA Brown hens those Will be F2 that Will not be sex linked any more but Will Lay Brown eggs

 

[Chooks man]

The Rooster is ISA Brown the hens are ISA Whites or Hyline W-36 White Leghorns so Technically they Will be F1 that Will Lay tinted eggs, I Also have ISA Brown hens those Will be F2 that Will not be sex linked any more but Will Lay Brown eggs

F1 so you expect them to keep they hybrid vigor ?
always interested in ISA Brown F2 progeny .how good of layer they can be ? and what type of egg colour?

chooks man

 

[nicalandia]

F1 so you expect them to keep they hybrid vigor ?

chooks man

They Only hybrid vigor I expect is on healthier birds as both the Brown egg lines and the White egg lines have reached the maximum possible egg production one can expect from a chicken(about 320 after a year of production and no more than 500 per 100 weeks of age) this can be confirm by HY-Line Tinted line of egg layers(for the Russian and Eastern European market where tinted eggs are preferred) They cross their Hyline Brown Sire(RIR) with W-36 Dames and produce what they call Hyline-Sonia which lay about 330 Tinted Eggs at 75 weeks of age.

Here is the English Parent Management Guide of the Hyline Sonia where you can see the RIR Type Sire and White Leghorn type dame: https://www.hyline.com/filesimages/Hy-Line-Products/Hy-Line-Product-PDFs/Sonia/SO PS ENG.pdf

Always interested in ISA Brown F2 progeny .how good of layer they can be ? and what type of egg colour?

chooks man

Since both Parent lines average 320 eggs at 75 weeks of age on a none intensive environment(parent stock breeding settings were both males and females interact is not the optimum for maximum egg laying productivity) and end product average about 330 at 75 weeks of age on intensive setting one can extrapolate that the F2 on an intensive or semi intensive settings should lay about the same as both parents and will lay Brown eggs as both parent lines do so too.

Hyline Brown Parent Management Guide where the White Plymouth Rock Dame expected egg production chart is available.

https://www.hyline.com/filesimages/Hy-Line-Products/Hy-Line-Product-PDFs/Brown/BRN PS ENG.pdf

 

[Rangergord]

Some information about Parent Stock and genetics behind the Phenotype of Production sex linked Brown and Silver based "Hybrids" on


Silver based Parent Stock(Both Sexes)
Genetic make up of their phenotype/

Wheaten at the e locus: eWh
Columbian Restricted: Co/Co
Dominant sex-linked Silver(S/- for females, S/S for males)
Dominant white: I/I
Not red enhanced: mh+/mh+

Brown/Red Parent Stock(Both Sexes)
Genetic make up of their phenotype/Genotype.

Wheaten at the e locus: eWh
Columbian Restricted: Co/Co
Recessive sex-linked gold(s+/- for females, s+/s+ for males)
Not dominant white (i+/i+)
Mahogany red enhanced: Mh/Mh

Terminal/Commercial sex-linked brown cross are:
Columbian Restricted: Co/Co
Recessive sex-linked gold: s+/- for females and S/s+ for males
Heterozygous dominant white: I/i+
Heterozygous Mahogany red enhanced: Mh/mh+

Terminal/Commercial Silver cross are:
Columbian Restricted: Co/Co
Sex-linked Silver: S/- for females and S/s+ for males
Heterozygous dominant white: I/i+
Heterozygous Mahogany red enhanced: Mh/mh+

Males of the both reciprocal cross will show red shoulders, lemon hackles/saddle, mostly white body due to dominant white and columbian restricted.

Isa brown rooster as example(Amberlink rooster looks the same and should have identical stats as in bodyweight and age at maturity)
View attachment 1844294


Due to Mahogany the Amberlink/Silver Brown Pullets will have varying degrees of red showing on the body.
View attachment 1844297


Yes, the Amberlink hen is the sister of the Isa/Dekalb brown, except is not sex linked. While doing an extensive research on reciprocal crosses like this example one can see that of the many egg production genes a few are bound to be sex linked, take this cross for example: The Amberlink is about 5% more productive than her brown sister you will hardly notice any difference in a backyard settings where both crosses will be hard press to reach 300 eggs per year, but when they are on a full production settings that 5% makes a huge difference in a flock of 1000 hens for example.

The hatcheries here are not forthcoming on which exact strain of red sex link we actually have. They have two different colloquial names for them none of which are ISA.
Thanks for the pics of the parents, that’s very interesting to see.

 

[gtaus]

The hatcheries here are not forthcoming on which exact strain of red sex link we actually have. They have two different colloquial names for them none of which are ISA.

I read somewhere that ISA Brown is a trademarked brand name. So maybe some hatcheries are using the same breeding stock, but prevented from calling them ISA Brown?

I won't pretend to understand all the genetics mentioned in this post, but I was real happy with my ISA Brown egg production for the first 2 years. She was the first to lay eggs and was my best layer in the 10 different breeds I had in my backyard flock. Now, going into their 3rd year, I have not seen many eggs from her. Maybe extended molt?

I like the fact that the ISA Brown is sex linked. I know I can order some more ISA Brown chicks this spring and don't have to worry about maybe getting a roo in the mix. That is a big plus for my small backyard flock.